New columns support separating soak-harness test traffic from real
user traffic in stats queries. Rebuilds leaderboard_overall matview
to include is_test_account so the fast path stays filterable.
Migration is idempotent via DO $$ / IF NOT EXISTS blocks inside
SCHEMA_SQL, which runs on every server startup — same mechanism
every existing post-v1 column migration uses.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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